package com.zrrd.reggie.controller;

import com.zrrd.reggie.util.R;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.UUID;

@RestController
@RequestMapping("/common")
public class CommonController {
    @Value("${reggie.path}")
    private String basePath;
    @PostMapping("/upload")
    public R<String> upload(MultipartFile file) throws IOException {
        String originalFilename = file.getOriginalFilename();
        String suffix = originalFilename.substring(originalFilename.lastIndexOf("."));
        String fileName= UUID.randomUUID().toString()+suffix;
        File f=new File(basePath);
        if(!f.exists()){
            f.mkdirs();
        }
        System.out.println(basePath);
        //文件写入磁盘
        file.transferTo(new File(basePath,fileName));
        return R.sucess(fileName);
    }
    @GetMapping("/download")
    public void download(String name, HttpServletResponse response) throws IOException {
        FileInputStream fis=new FileInputStream(new File(basePath+name));
        ServletOutputStream os= response.getOutputStream();
        response.setContentType("image/jpeg");
        int len=0;
        byte[] bytes=new byte[1024];
        while((len=fis.read(bytes))!=-1){
            os.write(bytes,0,len);
            os.flush();
        }
        fis.close();
        os.close();
    }
}
